Achillea virescens, (Fenzl) Heimerl

Tutin, T. G., Heywood, V. H., Burges, N. A., Moore, D. M., Valentine, D. H., Walters, S. M. & Webb, D. A., 1976, Flora Europaea. Volume 4. Plantaginaceae to Compositae (and Rubiaceae), Cambridge University Press : 164

33. A. virescens (Fenzl) Heimerl in A. Kerner, Sched. Fl. Exsicc. Austro-Hung. 3: 123 (1884).

Plant with stolons. Stems (10-)20-60 cm, simple, erect. Middle cauline leaves c. 2 x 1 cm, elliptical in outline, somewhat terete, pinnatisect, pubescent, the rhachis entire; primary segments 5-8 mm, lanceolate in outline, usually irregularly l(-2)-pinnatifid. Involucre c. 3 x 2 mm; bracts not more than 2-5 mm, shortly tomentose, dull. Ligules c. 1-5 mm. 2л=36. Dry waste places. • N. Italy; Jugoslavia. ItJu.

A somewhat ill-defined species, probably of allopolyploid origin, involving 32 and members of the A. millefolium group. Similar hybrids occur elsewhere in S. Europe, from Spain to Romania. A. kotschyi Boiss. , Diagn. Pl. Or. Nov. 3(3): 19 (1856) (inch A. urumofii Halácsy ), described from S.W. Asia, has been recorded from Bulgaria and Greece. It is like 33 but is lanate and has a more or less toothed rhachis and may merit subspecific status.